Forensic crews have finished up at a western Sydney home where a three-year-old girl was found dead with a gunshot wound to her neck, as her father remains behind bars on firearm offences.
Chaotic scenes unfolded at the Lalor Park home on Sunday night when the girl's mother ran from the house in hysterics.
"Not my baby girl, not my baby girl," the mother screamed, levelling blame at the girl's father, neighbours recalled.
"I hate you."
The girl's father, who emerged from the house covered in blood, was later charged with possessing an unregistered sawn-off shotgun and not storing the weapon safely. He was also charged with breaching domestic violence orders.
It's unclear how the girl sustained the single fatal gunshot wound, but police are investigating whether she accidentally fired the weapon herself.
Three other young siblings, aged between three and eight, were also in the home at the time of the shooting.
The three brothers all gave statements to police on Monday, according to News Corp.
The Danny Road property is no longer a crime scene, police said.
"Taken way too soon. RIP Angel safely in the arms of God. Love always xxxooo," read a note on a bouquet left under the home's mailbox on Tuesday.
St Joseph's Primary school in Schofields where the three brothers are students, was reaching out to grieving families.
"The community is united in prayer for this young child and will offer every support to the family," Catholic Education Diocese of Parramatta executive director Greg Whitby said in a statement provided to AAP.
Parents of the school have been contacted and specialist support staff and counsellors will be at the school, Mr Whitby added.
The girl's 43-year-old father from Arncliffe had been due to appear at Sydney Central Court on Monday, charged with participating in a criminal group activity and dealing with the suspected proceeds of crime, court documents show.
Those matters were adjourned until September 28 at the same court.
He appeared before Blacktown Local Court on Monday afternoon on charges related to the shooting.
He's scheduled to appear before the same court on Friday.
National domestic violence helpline: 1800 737 732 or 1800RESPECT. In an emergency call triple-zero.